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习题练习:Impulse and momentum



 作者: admin发布日期: 2024-08-07 16:03   总分: 17分  得分: _____________

答题人: 匿名未登录  开始时间: 24年08月07日 15:54  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  94.16: A car of mass m, traveling at speed v, stops in time t when uha -4wvwqw0; maximum braking force is applied. Assuming the braking force is independent of mass, what time would be required h;uww qv0aw- 4to stop a car of mass 2m traveling at speed v?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  96.04: When the velocity of a moving obpq.fx.b*hi 8s*s zeg 7ject is doubled, its_______is also doubledp* *ehq. .xgzs8i7fs b.

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  96.06: Impulse, Fne ;rn*s8. y/wtvo)elmv t $\Delta$tis best related to:

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.05: Which one of the following choices is most closely associated with the fo bv7g +fbl*li ni;q,,zllowing observation about an isolated object: “The linear momentum of the object is constal gf *li;niz7,q,v +bbnt.”?

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.21: The change in linear momentum of an object2 kkk6zsn r3h651bj we is always in the same direction as es 5 k36brwhknz6k1j2the

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  95.08: How long must a 100 N net force act to produce amg/yq*(p:cij d(2c;l;p6 tk y 3ogiih change in momentum of 200 h:3(q ; 2/jk (cpgy;mc*typoiildi6gkg.m/s?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  95.29: P and Q have the same momentum. Q can have mor 6vdktx)+:la c1za zd)e kinetic energy than P if it:l x d+z1k6tcvd)) :aaz

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  98.26: A ball with a mass of 0.50 kg and a speed of 6.0 m22(u)oyp b( vk/otluyncp5 ru5p/ 4 wh/s collides perpendicularly with a wall and bounces off with a speed of 4.0 m/s in the opposite direction. What is the magnitu2ou w vklp5ycr4/b)/(hyou2nu t5(ppde of the impulse acting on the ball?

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.08: A 50 kilogram gymnast falls freely from a height of 4 meters on6e wiusqqs x60/j+i z* to a trampoline. The6ijq+suz 6x 0 is*ew/q trampoline then bounces her back upward with a speed equal to the speed at which she first struck the trampoline. What is the average force the trampoline applies on the gymnast?

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.27: A 2.0 kg mass moves at 10.0 m/s when it has a collision in space. The dblr4q e6h.;ehh/m9n mass’s speed was unchanged, but the direction of its velocity was altered by4e.r;h dhnhleqb /m 69 $80^{\circ}$. If the collision lasted 0.25 s, what was the magnitude of the average force exerted on the mass?



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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.13: A bat striking a 0.125 kg-basex9hxiie;0rkcc*2ei7 ruz8(z1w wu(c ball is in contact with the ball for a time of 0.03 seconds. The ball travels in a straight line as it approaches and then leaves the bat. If the ball achr ixx8u z rz*2wc7e(keuw;c91 i0(irrives at the bat with a velocity of 4.5 m/s and leaves with a velocity of-6.5 m/s, what is the magnitude of the average force acting on the ball?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.43: An object of m 9 lg qge9+f5*rze,dtk)jrrm(ass 4.0 g has atotal kinetic energy of 100.0 J and an x-component of linear momentum equal to 24.0 kg.m/s. The object is moving in the x-y plane. What is they-component of the object’s linear momentum?t,r qkd* 9frgr5ejg+ m(ze )l9

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.05: At an instant of time t, a point object of mass M moves with vel:otbgws p2u9 9ocity V, has accelerat2: ousgbtwp99ion a, and is at position (x,y). In what direction must the linear momentum of the object be directed at this instant?

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.32: A rubber ball of mass 2.0 kg fallingys o8no:qtxh 3a :n+0f straight downward hits the ground with fsqhox 08 +nt :ya:3ona speed of 0.90 m/s and then rebounds straight upward with a speed of 0.60 m/s. The collision time of the ball with the ground is 0.25 s. Treat g = 10 N/kg.
What is the magnitude of the average acceleration (in units of $m/s^{2}$ ) of the ball while it is in contact with the ground?

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.33: A rubber ball of mass 2.0 kg falling straight downward hits te d9g;ji9 h0esth-a1 qhe ground with a speed of 0.90 m/s and then rebounds straig-q09t;9she1h adiejght upward with a speed of 0.60 m/s. The collision time of the ball with the ground is 0.25 s. Treat g = 10 N/kg.
What is the magnitude of the average force (in units of Newtons) exerted by the ground on the ball while they are in contact?

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  14.12: A box of mass 5.0 kg is being pushed to the right hp/bea9v hmbc b57, k w4jyo1y2/pz;dacross a horizontal surface while a consta/z1jk7adp; 2v /ybeb9b who4y5mhc p, nt frictional force of 8.0 N acts on the box. At some instant of time, the box has a speed of 4.0 m/s and an acceleration of$3.0\; m/s^{2}$ . What is the magnitude of the net force acting on the box at this instant?

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.12: A box of mass 12.0 kg is being pushed to the right across a horizo +dspg0toebg; 5 ig4h4ntal surface. When the box has 12.0 J of kinetic energy, a 12.0 N net force acts on it. Which one of the following choices best represents the magnitude of the linear momentum of the box at ths45 t;hog+p40ibd geg is instant?

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